Riveting implement.



PATENT OFFICE.

HENRY OVERMAN, OF BROOKLYN,

B V I 31 5131 Specification a: Letters Patent.

Patented. Dec. 1, 1908.

Application filed December 9,1907. Serial No. 406,732. I

To all whom it may concern:

Be it known that LTHENRY OVER-MAN, a

citizen of the United States, and residing at Brooklyn, in the county ofKings and State of New York, have-invented certain new and useful Improvements in 'Riveting Im lements, of which the following is a 'speci cation.

My invention relates to improvements in riveting implements, and more particularly to that type which is adapted for successivel forcing a rivet through flexiblematerial, such as leather, rubber and the like, and clenching the protruding ends thereof, whereby a ready means of uniting thefree ends of whatever materials may be selected, is afforded.

The object of my invention is to produce an efiicient and comparatively simple implement, v'vhich is automatic in operation and is particularly effective for the purpose of exerting symmetrical pressure upon the head of a rivet whilerequiring a minimum of effort on the part of the operator.

Heretofore in repairing machinery-belting, harness, rubber belts and the like with socalled bifurcated or two-pronged rivets, various rivet-holders have been provided, and the rivets when manually inserted therein, were either forced through the material 0 erated upon by means of pressure applie to the lever handles of suitable pliers, or by means of re 'ated blows from a hammer applied direct y to the rivetead while retained in the said holder. n the first instance, unless so-called parallel-jaw pliers, supplied with rivet holding means, were utilized for the urpose, the mner prong of therivet was de ected to a much greater extent than the outer rong, or the (prong adjacent the outer end of the jaws, an thus the symmetrical deflection of the prongs could not be accomplished. In the latter 'case not only was much time consumed both in forcing the rivet through the belting or other material, and also in clenching the same, owing to the necessity for repeatedly strikin the rivethead by means of the hammer, ut the element of skill played an important part in the operation, and even the most skilful operator was unable to uniformly clench all of the rivets applied to asingle belt.

Having thus described the nature and'object of my invention, I will now proceed to describe the construction and operation of r the implement embodying the features of my invention in their preferred form, reference .ous y with the movement 0 ei h o the c o p ny g d ings or i g a Pa t o t p ci i ti In the drawings Figurel is an elevation of I an implement embodying the features of my invention, a ortion of the same being shown in section; ig. 2 is a plan view of the implement shown in Fig.1, the handles anda portion of the rivet-feeding mechanism bein I roken away. Fig. 3 is'a detail sections;

elevation of the outer ends of the res ective upper and lower jaws of the im ement shown in Fig. 1. Fig. 4 is an eliavation chiefly in section of the outer end of the upper jaw, and of a portion of rivet-feeding mechanism. Fig, 5 IS aplan view of the upper face of the lower jaw showing a minia ture anvil constructed thereon, and Fi 6 is an elevation showing-the same parts. Ti is a plan view of the outer end of the upper jaw with the rivet-feeding mechanism removed. Fig. 8 is a plan view of the same portion of said aw loo in the opposite directionfrom that shown n Fig. 7, and showing the concave seat for receiving the rivet-head.

Referring to the drawin s in detail, the handles 1 and 2 are secured y means of the extensionsg3 and 4 to parallel-jaws 5 and 6 respectively, by means of The alinement" and paralle motion of said jaws is attained by means of the slots provided in the extensions 9 and 10 of said jaws,

ivots 7 and 8.

said slots 11 and 12 being adapted to receive ins 13 and14 and thus, while permitting of on 'tudinal motion of said pins simultanethe handles 1 and 2, the perfect alinement andsimultane ous movement of the jaws is secured and the same remain parallel-to each other irrespective of the position of the handles 1 and 2. The outer ends 15 and 16 of the said jaws are provided with rivet-feeding and c enchin mechanisms which are adapted to coactwit the said handles, as hereinafter described.

The lower face of the end 15 is provided with a discontinuous curvilinear rib 17, which as shown in Fig. 8 is broken away sufficiently to receive a rivet-head and to snugly embrace the same when positioned there n. The end 15' is provided with a groove 18 which is sufliciently deep to permit of the reception of the-la or pron s of a bifurcated rivet depending rorn the eedin mechanism hereinafter described, and

. said groove is beveled on opposite sides, from i assume the position shown in Fig. 3 as it enters the opening 19, which opening extends completely through the outer end 15 of the jaw 5. It is evident that if the groove 18.

at its inner end is approximately the width of the shank of the rivet when in the position shown in Fig. 4, and also Fig. 3, and

= serted within said slot.

provided the vidth of the rivet is greater across the same in the opposite direction, from that shown in said figures at the point approximating the lower ends thereof; that, even if the rivet enters the groove 18 in such a position that it extendsacross and contacts with the beveled portion 18, then the said bevel will gradually revolve it and cause the rivet to present its-narrowest dimension to the inner end of the groove 18 and enter the opening 19 in the position shown in Figs. 3 and 4'.

I In the opening 19 is inserted a hollow plug 20, provided with a slot 21 corresponding in size to the inner end of the groove 18. The upper end of saidhollow plug isfiared on its inner face and provided vn'th a square outer face 22. A band 23 which is integral with an arm 24 is secured to the outer face of said hollowplug, said 'hand'23 being'an inverted extension in a vertical plane of the arm'24, obtained by twisting the arm 24 as shown at 24. Said arm 24 forms approximately a 30 angle with the axis of the aw 5 and thus permits of rivets being fed by gravity from the upper or outermost end of said arm to the inner end thereof. A slot 25 extends longitudinally throughout the greater portion of said arm 24 and corresponds in width to the upper end of the rivet shank, being sufiiclently small to revent the passage of the rivet head therethrough'when a rivet is in- Ihe outer end of said slot is enlar ed sufiiciently to permit of the passage of t e rivet-head therethrou h and thus a rivet can be introduced upward y through said enlarged opening and mto the slot 25. p A sheet spring metal supporting member 27 provided with an elongated slot28 is connected tov the outer face of the hollow plug 20 by means of a screw or brad 29,.which screw or brad also serves to secure the ring 23. I provide at one endof the supporting memer an eye30 and an extension 31, said extension being secured both to the supporting member 27 and to the arm 24, preferably by spinnin over the ends as designated by the numera 32.

A spring finger 33, which is depressed at 34, sufficiently to cause the same to bear upon a rivet immediately the same is projected through the opening26, prevents accidental displacementof a rivet, once the same has been inserted throu h the opening 26 and into the slot 25. It is readily seen that since this spring finger is merely depressed at the upper end and is a distance from and parallel with the arm 24 throughout the remainder of its length, that the rivets may spring 36 normally rests upon the upper face of the arm 24 and is rigidly held in such position by the sleeve 37. its elasticity, however, offers but little resistance to the passage of a rivet-head thereunder in the manner hereinafter described.

A tubular member 39 forming part of the rivet-feeding mechanism is suspended from the eye 30 by means of a pin 41 which penetrates the reduced upper end 40 ofsaid tn- 1 bular member. A'slot 42 is provided in the opposite sides of said tubular member and a 'spring 43 is confined within said member 39 intermediate the upper end thereof, and a piston arm 44 of a forked member 46. A pin 45 penetrates said piston arm and limits the outward movement ofthe same to cor respond with the length of the slot 42 in which it freely travels. The forked member spring finger 33 and spring 36 and is provided with offset ears 47 which are adapted to engage arivet-head I) (see Fig. 4), owing tothe fact that the distance between the opposing ears is slightly less than the diameter of the rivet head as shown, and also less than the width of the spring 36.

A link or red 48 provided with a slot 50 in both of the members of its forked outer end, as shown in Fig. 4, is adapted to connect said tubular member, through the agency of the pin 49, which is received by said slot, with the handle 1, by means of a screw bolt 51 which connects the inner forked end of said link or red with said handle. It is evi dent that when pressure is applied to said handles 1 and 2 that said tubular member will be retracted from its outermost position. (see dotted lines Fig. 1), and will shove a the positionshown in Fig. 3, namely, it will. introduce the rivet within the hollow plug 20.

implement will be opened by the action or the spring 51'. Simultaneously the offset ends of the forked-pusher 46, which as freely move along said slot while being prefor the purpose hereinafter described. Said 46 is adapted to span and embrace both the.

rivet a from the position shown in Fig. 1 to shown in Figs. 1 and 4, during the forward When on the other hand, the pressure is relieved from said handles, the jaws of the motion which may be desired when handles 1 movement of-the fork and prior to its escape from beneath the inner and lowermost free. end of the rivet-retaining leaf-s rin 36, normally rests on the arm.24, wi ri e up the incline surface of the leaf-spring. Said leafspring throughout the greater portion of its length is of sufficiently greater width than the distance between the said offset ends of the pusher, to prevent the projection orescape of said ends beneath the incline sur-' face until the said forked-pusher has attained a position immediately above the reduced neck 37 of said leaf-spring. The latter as shown (Fig. 2) is of insufficient width to ermit of the engagement with said offset en 47 (Fig. 4) and thereupon the said fork, which is nominally impelled downwardly by the action of the coil-spr-ing 43, will project belowsaid leaf-spring 36, the same in effect being a straddle of the neck of the leaf-spring and assumes the position shown in the outermost dotted lines of Fig. 1 't. e. immediately behind a rivet-head. From this construction it is evident that not only will a rivet be positively fed forward into the hollow plug 20 upon compressing the jaws 1 and 2, but also other rivets which assume the position of any rivet removedv by said forked member will be prevented from accidentally dropping into said hollow plug. Moreover, owing to the fact that the distance between the opposing ears 47 of'the forked member is less than the width of the spring 36, it is evident that while said ears are not prevented from being positively thrust beneath said spring when feeding a rivet, yet they will be prevented from returning in the same path .and will be caused to rise up along the spring 36 and above any rivet which has replaced the rivet removed by said forked member, and thus the compound, forward-upward and-downward motion is obtained.v

The slot 50 permits of lost motion and its length will depend uponthe amount of lost and '2'are com 'ressed, as it is evident that the rod or lin 48 will not act upon said member 39 until the pin 49 engages the outer end of the slot, and therefore the lost motion will correspond to the length of the slot, or in other words, the distance which the pi-n49 is permitted to freely travel without contact with the outer end thereof.

A rivet-holding member 52 is provided with an off-set portion 53, which is adapted to receive a rivet-head'whilepermitting the shank of said rivet to roject through the notch 53 which is provi ed in the end thereof, as shown in Fig. 4.

Two slots 54 sufficiently elongated toproduce the effect hereinafter described are adapted to receive screws 55 provided with shoulders 55, said shoulders corresponding l in width to the width of the slot, and being 'material operated upon, as shown in smaller than the head of the screws 55,

holding member, as shown, and preferably as illustrated in Fig. 2, an elongated slot is provided in the upper jaw, and at o posite sides thereof, to correspond with t e distance through which said slide moves,

namely, a slot equal in lengthto the slots 54. Thus the said rivet-holding member can be more effectively secured to the upper jaw, owin to the .fact that m lieu of a screw merely connecting the upwardly extending portions of said rivet-holding member with the links 56 a small portion of said screw may project into the slots 57' without impeding the relative movement of the rivet-holding member with res ect to said aw -5.

It is evident t at the slots 57 will permit of lost motion in a manner similar to that described in connection with the slots 50, and therefore when said ljaws 1 and 2 are compressed, the rivet-ho ding member 52 will remain momentarily stationary, the

time depending u onthe distance between the-outer end of t e'slot 57 and the pm or screw 57 which when the jaws are in their open position will be at the inner end of the saidslot. As the jaws a proach one another the links 56 will gra ua'lly recede and initially without causin a corresponding recession of the rivetolding member, which member will remain in the position shown in Fig. 1 until the rivet-prongs b have entered the material comprising two layers 0 and c.'-a sufficient distance to inde pendently support the rivet. Immediately the rivet has entered sufficiently into said material operated upon to eliminate the necessity of sup orting the same by means of a holder, the inks 56 will begin to withdraw the said holder and the inward move- 54. In such position as shownin Fig.3 theforked end of the holder will 'pro'ect immediately across 'thelower end of t e opening 19 through which a rivet 11 drops upon openin the aws-5 and 6, being thereby re ceived y the said forked end. Upon appl ing pressure to the jaws, subsequent to tlie retraction of the rivet-holdin member, the rivet-head is caused to flush ly enga e the i 3.

As soon as ressure is relieved from the jaws 1 and 2, t 1e spring 51 causes the jaws to separate and'effects the outward motion of the links 48 and 56 and the outward motion' of the latter serves to thrust the rivetholdin member 52 forward as soon as the desired amount of lost motion is secured. It is necessary that the forward movement against the rivet-head when said rivet-head is contained within the seat 17 and thus'prevent its accidental escape therefrom.

The hollow plug'20 can be readily removed from the openmg 19 by merely removing the screw or brad 29 and a larger or smaller plug may be substituted therefor, provided the external diameter of the new lug is adapted to frictionally engage-the wal s of said 0 ening. 1 Thus a plu of a smaller interna 'diameter adapted or smaller rivets may be substituted if desired.

On the lower jaw 6 I provide a miniature anvil 58, which is composed of a retractable center and permanently fixed, oppositely disposed members 58. A cylindrical nec or shank 60 rejects within a recessadapted to receive tlibsame and extends vertically through the upper face of the jaw 6, and the lower conical end 60 projects into a second recess 61 extendin longitudinally and horizontally within sai jaw and adaptedto con- 'fine therein a'wedge member 62 mounted on a rod 63. A'link'64 connects with said rod 63 and with the handle 2, being connected by a-pin 66 and an intermediate washer 65, and also a screw or pin 68 respectively.

The bottom of the recess 61 is coveredb a slotted cap 67, the slot 67 being elongate An elongated slot 68. also permits of lost purpose of slots 50 and 57 641s provided with a siot 68, above noted,

motion in a manner corres onding to the he link or red and upon pressure being applied to the handles 1 and 2, the rod or link 64-. aflects the retracting of the wedge member 62 through the agency of the post 63-, which is ca able of limited motion in the said slot 67' pon the retraction of said wedge member, the member 59 recedes within the jaw 6 as shown in Fig. 3 and the ridge upon said member 59 is thus prevented'fro'm contacting with'the lower face of the material in which the rivet is to be clenched, while the members 58 being fixed upon said jaw exert the proper degree of ressure desired wholly,

upon the prongs oft e bifurcated rivet and thus with a minimum of effort the prongs are clenched in said material, as illustrated in Fig. 3.

In Fig. 6 the line arcy designates a per.-

pendicular dropped from the center of the,

circle of which the arcs comprising the upper surface of the members 59 and 58 are a part.

It is evident therefore that the curvatpre of the upper surface of the member 58 is not only continuous but extends beyond the through the opening '19, that'sai taneously with t jaws upon the compression of the handles 1 perpendicular :1c-@, for thereasons hereinafter specified. v

As shown in Fig. 6, the member 59 is ada ted to project slightly above the upper su ace of tne member 58, as shown at 59, and thus the ends of the respective pron s of therivet readily slide from the surface 0 the member 59 onto the u per surface of the member 58, whereas 0t erwise the member 59, if positioned below the member 58 would be unable to perform its function. I

As shown in Fig. 3 ,the prongs of the rivet having been spread or separated by the member 59, the upplersurfaces of which, on

opposite sides of t a central ridge thereof corresponds to the curvature of the opposing members 58, are caused to'project substantially vertically. upward and into the material operated upon, owing to the fact that the curvature of the surface'of the members 58 continues uninterrupted slightly beyond the I bands.

The lost motion effect heretofore referred simultaneous movement of the links or rods 64, 48 and 56 at the .desired periods, ash is evident that werethe rods or links 56 to ate and a flexible band, said metal to is for the purpose-of accomplishing the thrust the rivet-holding member forward, prior to the passage of a rivets com letely I and 2, as the anvil member 59 is required to remain stationary until the rongs of the bifurcated rivet have passe completely through the material or materials operated upon and have been partially deflected along the surfaces of said anvil-member and in the' direction correspondin to the curvature of the said surfaces an necessarily .to the curvature of the similar surfaces of the mem-- bers 58. In order to accomplish this desired amount of lost motion the slot 68 is elongated sufficiently to revent the forward or rearward motion 0 the wed e 62 until the moment when it is desired t at said movement of the member 39 subsecl uent to the insertion of the rivet into the hol ow plug 2Q as shown in Fig. 3.

The type of anvil herein described consists of a central retractable member having a transverse ridge centrally disposed thereon, but it is evident that without departing from the spirit of my invention, the central retractable member may be of any desired configuration, Moreover, such an anvil is adapted for other implements than parallel jaw-pliers and without departing from the s irit of my invention as covered by the c aims all of the various combinations which are novel'in this implement, and which are claimed as sub-combinations, may be adapt.- ed to other forms of implements.

The magazine com rising the arm 24, the spring-finger 33 and t e spring 36, as shown, projects at an angle preferably to the axis of the'upper jaw'for the purpose of ermittingof gravity feed of the rivets into t e, osition which permitsof their being engaged by the forked-member 46 when in its outward position as shown in the dotted lines of Fig. 1. Such a disposition of the magazine with re.- spect to the position of the upper jaw eliminates the necessity of tilting or shaking the implement when repairing machinery-belting or the like, and enables the operator to manipulate the instrument in a substantially horizontal position.

Various minor chan es in the details of construction from that erein shown may be made without departing from the invention as herein claimed.

In Fig. 5 retaining bolts or screws 69 are illustrated for the purpose of securing the cap or plate 67 to t e ottom of the jaw 6, the late being preferably countersunk in said aw as shown in Figs. 1 and 3.

Having thus described myinvention, what I claim is:

1. In a riveting implement, the combination comprising a pair of oppositely disposed pivoted jaws, a movable rivet-holder arranged to support a rivet intermediate the said jaws when the same are in an open osition, means for retracting said rivet-ho ding means longitudinally of said jaws during the closing movement of the latter, an anv1l on the inner face of one of said 'aws adapted to directly oppose the lower end of a rivet when said rivet-magazine, said in an operative position in said rivet-holder,

said anvil having an elongated central ridge and the portions of said anvil on opposite sides of said ridge having surfaces of a curvilinear configuration, said anvil presenting a surface to each leg of a forked rivet of substantial-ly continuous and equal curvature beyond the perpendiculars dropped from the centers of the clrcles to which the said curvilinear surfaces correspond in curvature.

2. In a riveting implement, the combination comprising a pair of pivoted jaws, one of said jaws being provided with a rivet-ma azine and-also a passage extending vertically through said jaw adjacent the inner end of said rivet-magazine, a movable rivet-holder positioned on the lower face of said jaw and capable of being positioned directly beneath one end of said assage, a concave seat on the lower face of the aforesaid jaw adapted to receive the head of a rivet while retained in said rivet-holdin means, means for retractsaid rivet-ho ding means simultaneously with the downward movement of the said jaw provided with the rivet-magazine, an-

anvil' directly opposed to said concave seat and positioned on the opposing jaw, and means for retracting the central portion of said anvil subsequent to the contact of the. I

lower ends, of a forked rivet therewith.

3. in a riveting implement, the combination comprising a pair of pivoted jaws, one of said jaws being provided with arivet-ma azine and also a passage extending vertica ly through said jaw adjacent the inner end of assage being of sufficient size to admit of t e reception of a rivet from said rivet-magazine, means adapted to receive a rivet immediately subsequent f to its exit from said passage and to feed the same forward into an operative vposition, an anvil on one of said jaws adapted to directly oppose the lower ends of a forked means for causing the retraction of the highest portion of said anvil subsequent to its contact with the ends of a forked rivet.

'4. In a riveting implement, the combination comprisin a palr'of pivoted handles,

jaws connecte therewith, means for main-v other, the surfaces of the outer ortions of the said anvil being of substantially equal curvature to-the curvature of the surfaces of those ortions. of said anvil adjacent said central ridge, the said outermost points of said curvilinear surfaces being beyond the points of intersection of the perpendiculars .rivet when in an operative position, and

who

jaws connected therewith, a removable holow plug adapted to be secured within a pas-. vsageprovided in one of said jaws, a rivetmagazine secured thereto, an auxiliary su port ada ted to connect said ,plug with t e outer en of said rivet magazine, a tubularmember suspended from said auxiliary supporting means, means adapted to engage a rivet-head rojectin from said tubularmember an elastica ly supported therein, means adapted to prevent the accidental escape of a rivet from said magazine when the same is in an inverted position, a usher element adapted to normally contact with the upper surface of said rivet-magazine and capable of positively ejecting a $111 le rivet from said ma azine, and means for e evating said pusher-e ement out of contact with the ,ulpper surface'of the rivet-magazine during 7 1e return movement of the said pusherelement, whereby a-unidirectional feed of a rivetcan be accom lished while permitting of the bi-directiona longitudinal movement ofthe said pusher-element. i v

6. An anvil havin a retractable central portion and oppositely disposed lateral portions, said central and said lateral portions .being adapted to form'continuous arc-like surfaces on opposite sides of .the center of said anvil when the central portion is. elevated to the required degree, each of said arc-like surfaces on opposite sides of the center, extending beyond the points ofintersection' of the perpendiculars dropped from the centers of circles included in said arc-like surfaces and of which each of said arcs is a part.

7. The combination, comprising'a pair of pivoted handles, jaws connected therewith, a rivet-magazine connected to one of said jaws, a rivet-holding mechanism adapted to support a rivet intermediate said jaws, and connections embodying lost motion operatively connecting saidrivet-holding mechanism with one of said handles whereby when said handles are operated the sa d rivetholdingmechanism will be permitted-to remain stationary during a portion of the stroke of said handles. j

8. The combination, comprising apair of pivoted handles, jaws connected therewith,

a rivet-magazine connected to one of said jaws, rivet-feeding mechanism adapted to eozsarro effect the uni-directional feedof rivets contamed 1n said magazine, and connections embodying lost motion connecting said rivetfeeding mechanism with said handles, whereby when said handles are 0 erated the said rivet-feeding-mechanism .be permitted to remain stationary during a portlon of the stroke of said handles,

9. The combination comprising a pair of pivoted jaws, a retractable anvil positioned on the inner face of oneof said jaws, handles respectively connected with each of said jaws, and connections embodying lost motion connecting said handles with the retractable element of said anvil, whereby when said handles are contracted the said retractable element of said anvil initially remain stationary.

10. The combination, comprising a pair of pivoted handles, jaws connected therewith, one of said jaws being provided with a groove, said groove at one end being provided with beveled walls, the bevel on said able hollow plug adapted to frictionally en-. 'gage'a passage provided ina jaw of a riveting mplement, arivet-magazinesecured to said plug, an auxihary support adapted to conrivet-ma azine,;a tubular-member suspended from sai auxiliary supporting means, means adapted to engage a rivet-head projecting from said tubular-member and elastically supported therein, means adapted toprevent'the accidental escape of a rivet from said magazinean'd means ca able of causing ositive uni-directional fee ing of a rivet rom said magazine into said hollow plug.

'In' testimony whereof, I have signed my name to this specification in the presence of vtwo subscribing witnesses, this third day of December, 1907.

v HENRYOVERMAN; Witnesses:

W. H. SWENARTON, CHARLES E. Wmz.

heat said plug with the outer end of said. 

